Its county seat is San Antonio, the second-most populous city in Texas and the seventh-largest city in the United States. Bexar County is included in the San Antonio-New Braunfels, TX metropolitan statistical area. Bexar county includes Government Canyon state natural area in northwestern part of the county.
If the screen width is 7 feet and the projector's throw ratio is 2.0 - 2.4:1 (because projectors have zoom lenses, they also have a range of throw ratios) then you can place your projector anywhere from 14 to 16.8 feet away from the screen.
The mathematical calculation of this effect is called âthrow ratio.â Technically speaking, âThrow ratioâ is an equation that explains the distance from projector to screen compared to the screen size. For example, a standard projector might have a 1.5:1 throw ratio. So, to get a 60-inch image; the projector would have to be 7.5 feet back from the screen. Or, approximately 1.5â back for every 1â of screen. Any projector will have this ratio listed in the general specifications.